Senior Frontend Engineer – ReactJS (Full Stack)

About the role

Sia Partners is building a new technology team in Mumbai and seeks a Senior Full Stack Engineer focused on frontend development. You will work on AI‑powered SaaS products, turning sophisticated UI/UX designs into high‑performance web applications using ReactJS and related technologies.

Key responsibilities

• Design, develop, and optimise user interfaces with ReactJS and NextJS.
• Ensure technical feasibility of UI/UX designs and maintain cross‑browser compatibility.
• Implement state‑management solutions and optimise component rendering for performance.
• Collaborate closely with backend developers, designers, and product owners.
• Write unit tests, automate testing, and conduct code reviews to maintain code quality.
• Manage cloud infrastructure as code using Terraform and Helm.
• Deploy and maintain applications on GCP, AWS, or Azure and oversee CI/CD pipelines.

Required profile

• Bachelor’s or master’s degree in Computer Science, Software Engineering or a related field.
• 3‑6 years of professional experience in frontend development, with strong expertise in ReactJS.
• Proven ability to work in a fast‑paced, collaborative environment.

Required skills

• ReactJS, NextJS, Node.js
• JavaScript, TypeScript, HTML, CSS
• REST and GraphQL APIs
• Git, CI/CD pipelines
• Figma for design hand‑off
• Micro‑frontends, accessibility standards, APM tools
• Terraform, Helm (IaC)
• Cloud platforms: GCP, AWS, Azure